Izyuryel occurrence of lower carboniferous kaolins of the South Timan: occurrence mode, textural features

This article presents new data on the Lower Carboniferous Izyuryel occurrence of kaolins in the South Timan. Through numerous excavations (trenches, test pits, and hand dog wells) in the area of about 2 km2 in the Cher Izhemskaya River basin (left tributary of the Izhma River), the authors have opened and studied the 3-9-m-thick kaolinite layer deposited with stratigraphic unconformity on the Upper Devonian dolomites and overlain by Lower Carboniferous dolomites. There are rock sections of two types differing in composition and thickness. The article describes the structure of the sections and rock texture. By the study results, the kaolinite strata are much thicker than previously assumed and, theoretically, contain more kaolin. The authors indicate the possible location of the most promising area with kaolin raw.